Update safe string copy for better debug flow and fix filename typo.

strings/strscpy.c

@@ -29,6 +29,9 @@
 * Will return the length copied (and whether it overflowed or not).
 */
 char *strscpy(char *restrict dest, const char* restrict src, size_t n) {
+	/* Sanity check. */
+	assert(dest && src);
+
 	/* Copy using memcpy. */
 	char *last = memccpy(dest, src, NULL_CHAR, n);
 

strings/strscpy.h

@@ -20,6 +20,13 @@
 #define STRSCPY_H
 /* Include string.h */
 #include <string.h>
+/* Include assert.h to allow code generation, but only run with debug flag. */
+#ifdef DEBUG
+#ifndef NDEBUG
+#define NDEBUG
+#endif	/* NDEBUG. */
+#endif	/* DEBUG. */
+#include <assert.h>
 
 /* Constants. */
 #define NULL_CHAR	'\0'